Genuine GiffGaff Review
Link to order sim: http://giffgaff.com/orders/affiliate/...
I was on virgin pre pay. costing about £30 a month. Was costing 30p/50p every time I connected to the internet so I decided to move networks.
GiffGaff have a good App on phone that shows your usage and how much you have left if you are on a Goodybag.
Bought phone locked to o2 and it works on GiffGaff. Good network signal - no problems.